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anyanavicka [17]
3 years ago
10

when draining her hot tub, the height of the water in Brittany's hot tub decreases at a rate of 2 inches per minute. After 9 min

utes there are 11 inches of water in the tub. Assume that the height is decreasing at a constant rate. After how many minutes will the tub be empty
Mathematics
2 answers:
Oliga [24]3 years ago
5 0

after 5.5 or 5 1/2 minutes the tube will be empty.

Hope this helps:)

olganol [36]3 years ago
4 0

Answer:

--------------------------------------------->>>>>>>

Step-by-step explanation:

h-11=-2(t-9)

h=-2t+18+11

h=-2t+29

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Need help due tomorrow plz help!!
Sonbull [250]
1.) B

because it says the person buys a ski for 350. He puts down $110 which means to subtract. Now he got a discount which also means to subtract. Then it told that he gave 1/2 them money to his mother. So that too means to subtract. 

2.) 2+5n

because it says 2 plus 5 times a number. So 2+5×n 
6 0
3 years ago
g A milling process has an upper specification of 1.68 millimeters and a lower specification of 1.52 millimeters. A sample of pa
adoni [48]

Complete Question

A milling process has an upper specification of 1.68 millimeters and a lower specification of 1.52 millimeters. A sample of parts had a mean of 1.6 millimeters with a standard deviation of 0.03 millimeters. what standard deviation will be needed to achieve a process capability index f 2.0?

Answer:

The value required is  \sigma =  0.0133

Step-by-step explanation:

From the question we are told that

   The upper specification is  USL  =  1.68 \ mm

    The lower specification is  LSL  = 1.52  \  mm

     The sample mean is  \mu =  1.6 \  mm

     The standard deviation is  \sigma =  0.03 \ mm

Generally the capability index in mathematically represented as

             Cpk  =  min[ \frac{USL -  \mu }{ 3 *  \sigma }  ,  \frac{\mu - LSL }{ 3 *  \sigma } ]

Now what min means is that the value of  CPk is the minimum between the value is the bracket

          substituting value given in the question

           Cpk  =  min[ \frac{1.68 -  1.6 }{ 3 *  0.03 }  ,  \frac{1.60 -  1.52 }{ 3 *  0.03} ]

=>      Cpk  =  min[ 0.88 , 0.88  ]

So

         Cpk  = 0.88

Now from the question we are asked to evaluated the value of  standard deviation that will produce a  capability index of 2

Now let assuming that

         \frac{\mu - LSL  }{ 3 *  \sigma } =  2

So

         \frac{ 1.60 -  1.52  }{ 3 *  \sigma } =  2

=>    0.08 = 6 \sigma

=>     \sigma =  0.0133

So

        \frac{ 1.68  - 1.60 }{ 3 *  0.0133 }

=>      2

Hence

      Cpk  =  min[ 2, 2 ]

So

    Cpk  = 2

So    \sigma =  0.0133 is  the value of standard deviation required

3 0
3 years ago
which of the following algebraic expression can be used to express the statement three less than z squared
frez [133]
z^{2}-3
3 0
3 years ago
Lowest common denominator of 3 5/7 and 4 4/5
IrinaK [193]

Answer: look at the screenshot

Step-by-step explanation:

it has everything you need

6 0
3 years ago
Last one i hope (no pictures).
-BARSIC- [3]

Answer:

9

Step-by-step explanation:

RST = 90

90 - (22 + 41) = 27.

3x = 27

27/3 = 9

x = 9

8 0
3 years ago
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